Question

Another way to obtain crystals is to add 95 % ethanol to an aqueous solution that...

Another way to obtain crystals is to add 95 % ethanol to an aqueous solution that contains kw[fex(C204)y(H20)z] Explain the chemical principle that is being used in this crystallization technique

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Answer:

The method solvent exchange , which comprises adding slowly with stirring to the aqueous solution complex , a solvent miscible with water , but in which the complex is insoluble . This method has the disadvantage that , in some cases , the complex can be separated in amorphous form of oily appearance, which is difficult to obtain shaped complex crystal . Furthermore , potassium oxalate which may be present in solution , It is also insoluble in ethanol , which may be coprecipitated with the complex , Thus taking away impurities the product was recrystallized from larger crystals and purer product .

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
I am working on a chemistry lab which involved recrystallization of Kw[Fex(C204)y(H20)z] (unknown ratios are a...
I am working on a chemistry lab which involved recrystallization of Kw[Fex(C204)y(H20)z] (unknown ratios are a part of the rest of the lab) and was wondering about a few of these questions: 1) Another way to obtain crystals is to add 95% ethanol to an aqueous solution contains Kw[Fex(C204)y(H20)z]. Explain the chemical principle is being used in this crystallization technique. 2) If green crystals of the compound do not form, another technique that can be attempted is to reduce the...
1. An evaporation-crystallization process is used to obtain solid potassium sulphate from an aqueous solution of...
1. An evaporation-crystallization process is used to obtain solid potassium sulphate from an aqueous solution of this salt. Fresh feed to the process 18.6 wt% K2SO4. The wet filter cake consists of solid K2SO4 crystals and a 40 wt% K2SO4 solution, in a ratio 10 kg crystals/kg solution. The filtrate also a 40 % solution, is recycled to join the fresh feed. Of the water feed to the evaporator, 42.66 % is evaporated. The evaporator has a maximum capacity of...
At one point in the procedure, dilute hydrochloric acid is used to neutralize the solution. Specifically,...
At one point in the procedure, dilute hydrochloric acid is used to neutralize the solution. Specifically, what is being neutralized? (there is more than one answer here.) Procedure: Place 200 mg sodium methoxide and 400mg sodium borohydride into a 50mL beaker with 10mL Methanol. Stir the contents of the beaker genetly and let it sit undistrurbeded for 15minutes. Preparation of the 9-fluorenone solution Into a 250mL beaker place a 500mg 9-fluorenone, crushing any large pices of the solid. Add 10mL...
Below is the background info for the lab assignment. The 4 blank boxes are the questions...
Below is the background info for the lab assignment. The 4 blank boxes are the questions I would like answers too. The end point for the fine titration was 35.90 mL in the burette when the solution turned bright green again. And the coarse titration I got 35.36mL as the end point. 35.9 mL is exact in case you need that info. Thanks! Background In this lab, we will determine the amount of alcohol (ethanol), C2H5OH, in a commercial vodka...
In this experiment you will construct a smal electrolytic cell. Then using indicators you will determine...
In this experiment you will construct a smal electrolytic cell. Then using indicators you will determine the products fromed at the anode and the cathode druing several different electrolysis experiments. About the experiment: in the first part of this experiment you will construct a small scale chlorine production plant. it is a miniature of the real, large scale process used for production of chlorine by the electrolysis of sodium chloride or brine (procedure written by Dr. Stephen thompson, CSU, CO)...
You will write a program that loops until the user selects 0 to exit. In the...
You will write a program that loops until the user selects 0 to exit. In the loop the user interactively selects a menu choice to compress or decompress a file. There are three menu options: Option 0: allows the user to exit the program. Option 1: allows the user to compress the specified input file and store the result in an output file. Option 2: allows the user to decompress the specified input file and store the result in an...
1) Describe an example of each of the following that may be found of your kitchen:...
1) Describe an example of each of the following that may be found of your kitchen: Explain how your choice falls into this category, and if there is a chemical name or symbol for it, provide that as well. Provide a photo of your example with your ID card in it. a) a compound b) a heterogeneous mixture c) an element (symbol) Moving to the Caves… Lechuguilla Caves specifically. Check out this picture of crystals of gypsum left behind in...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT